Signing via WhatsApp
DottSign integrates with the WhatsApp Business API, letting you deliver signing invitations directly to a signer's WhatsApp, no email inbox hunting required.
WhatsApp delivery is especially effective for:
- Signers who are less likely to check email promptly
- Mobile-first users in Brazil and Latin America, where WhatsApp is the primary communication channel
- Time-sensitive contracts where open rates matter
For Senders: How to Enable WhatsApp Delivery
When adding a signer to your contract:
- Click Add Signer and fill in their name and email.
- Toggle Also send via WhatsApp.
- Enter their phone number in international format, for example,
+55 11 98765-4321. - Continue setting up the contract as normal.
When you click Send, DottSign will:
- Send the standard invitation email
- Send a WhatsApp message to the phone number you entered
Both the email and the WhatsApp message contain the same unique signing link.
WhatsApp delivery requires the WhatsApp add-on on your plan. You can enable it in Settings → Integrations. View plans →
What the Signer Receives on WhatsApp
The signer receives a message from the DottSign Business number that looks like:
📄 You have a contract to sign. [Contract Name] sent by [Your Name].
Tap the link below to review and sign: [Secure signing link]
This link expires on [date].
The link opens DottSign's signing flow in the signer's mobile browser, no app download required.
For Signers: Signing from WhatsApp
- Tap the link in the WhatsApp message.
- Your phone's browser opens the DottSign signing page.
- You'll receive a 6-digit OTP, check WhatsApp (or your email) for the code.
- Enter the OTP to verify your identity.
- Read the document and sign using your finger, the touch-based signature canvas works just like drawing with a pen.
- Tap Finish Signing.
That's it. The entire flow takes about 2 minutes on a phone.
WhatsApp Reminders
You can send a manual reminder at any time from the contract detail page:
- Find the signer who hasn't signed
- Click the Send WhatsApp button next to their name
This sends a fresh signing link directly to their WhatsApp.
Troubleshooting WhatsApp Delivery
The signer says they didn't receive the WhatsApp message
- Confirm the phone number you entered is correct and in international format (starts with
+and country code) - The number must have WhatsApp installed and active
- Some numbers may be blocked from receiving messages from business accounts, in that case, use the email link
- Check the delivery status on the contract detail page, it will show Delivered, Failed, or Pending
"WhatsApp not available" error when adding a signer
WhatsApp delivery may not be activated on your account. Go to Settings → Integrations and check the WhatsApp status, or contact support@dottsign.com to enable it.
The signing link in WhatsApp is expired
Check the contract's expiry date in your dashboard. You can extend it from the contract detail page → Edit expiry date.